E... Directions: For each of the following problems, show your balanced chemical equation and all
of your calculations.
+ ...
e...
1. Determine all of the possible mole ratios between K with (O, and K, O) from this chemical
equation:
4K + 0 0 2 K2O
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2. Determine all of the possible mole ratios between Cu with (S and Cu2S) from this chemical
equation:
2 Cu + S Cus
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3. Determine all of the possible mole ratios from this chemical equation:
Mg(CIO3)2 + 0
MgCl2 + 302

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hope i !

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.